An excuse used by a father to explain why he was watching PG rated kids movie on the basis that they were watching it with their daughter or son.
It is a justification for explaining why the manly man was watching something extremely out of character.
Compare and contrast the usage of Kid Shield:
Person 1: I had nothing to do Saturday night so I watched Beauty and the Beast.
Person 2: Yeah, I watched Beauty and the Beast Saturday night with my kids.